Which type of algae is commonly found in an improperly maintained swimming pool?

Green algae is commonly found in improperly maintained swimming pools due to its ability to thrive in conditions that are not conducive to proper pool sanitation. When a pool's chlorine levels are low or the water is not adequately circulated, green algae can quickly proliferate, leading to a noticeable green tint in the water and slippery surfaces on walls and steps. This type of algae is often referred to as 'pond scum' and can develop rapidly if the pool is not kept clean and properly balanced.

While other types of algae, like white or purple algae, may also occur, they are less common in typical pool scenarios that result from inadequate maintenance. Green algae, with its fast growth and visual impact, serves as a clear indicator of poor water quality and the need for immediate attention to sanitation practices in the pool environment. Understanding this helps pool operators identify when corrective actions are necessary to restore balance and safety in the water.